Geometric
Explicit Models
Example 1
Find the first four terms of a geometric sequence whose first term is 2 and whose common ratio is 4.
Step 1. Use the first term and the common ratio to find the terms.
2 x 4 = 8
8 x 4 = 32
32 x 4 = 128
Therefore, the first four terms are 2, 8, 32, and 128.